Fountain pen



I GI

Patei'ilzed 4, 1923. I

PATENT ion-ice].

THOMAS BUDDERHAM, 0F SII'IDBUBY, ENG-LAND.

FOUNTAIN PEN.

Application filed January 29, 1923. Serial No; 615,676.

To all whom it"may concern? Be it known that I, THOMAS EDWARD RUD-DERHAM, a subject of the King of England, residing at Sudbury, Su'flolk,n land,'have invented certain new and usefu Improvements in FountainPens, of which the following is a specification.

This invention is for improvements in or relating to ,fountain pens andhas for its object to provide such a pen with a cap of improvedconstruction such that the writingnib can be exposed for use withoutremoving the cap. v

It has heretofore been proposed to provide a fountain pen with alongitudinally split, spring-controlled cap arranged to open and closewhen slid longitudinally on the end' of the pen and to allow the nib toprotrude when the cap was slid back on the pen. It has also beenproposed to provide a fountain pen whereof the body portion or reservoirhad a cylindrical end part into which the nib could be retracted, asleeve having a closure member on one end being mounted to rotate on,but not to slide lengthwise of, the body portion, the arrangement be ngsuch that ,when the nib was retracted the sleeve could be rotated tocause the closure member to close and open the said end part of the bodyportion.-

According to this invention there is provided in a fountain pen, thecombination with the body portion or reservoir of the pen, of a capmounted to slide lengthwise on one end of the body portion and having inits free end a hole to permit the projection therethrough of thewriting-nib when the cap is slid back on the pen and means operativewith the sliding movement of the cap for covering the said hole when thecap is advanced. Preferably, the cap comprises an outer and an innershell rotatable relatively to one another, both slidable endwise on thepen and both having in their ends an orifice to permit the writing-nibto project therethrough, and means operatively connected with the penwhich is such that one shell must rotate relatively to the other as thegp is moved in one direction or the other. In the accompanying drawings,which illustrate one method of carrying out this invention:

Figure 1 is alongitudinal section through the cap-end of the pen withthe cap in position for covering the writing-nib.

Figure 2 is a longitudinal section through the cap-end of the pen withthe capin the position for exposing the writing-nib, and Figure 3 is anexternal view of the inner shell of the cap.

Like reference letters indicate likeparts throughout the drawings.

The pen A may be of any convenient construction, but the writing-nib -Ais car'- ried eccentrically at the end instead of being situated in theusual central position.

Sliding over the end of the pen is a cap oomprisingBtwo shells'B and Ores ectively. The shell has in it a cam-slot which is spiral at that endfurthest from theclosed end of the cap and straight at that portionwhich is near the closed end. A pin 1) is fixed in the pen bodyandengages this cam-slot B and the spiral portion is arranged to causethe shell to rotate through 180 by reason of engagement with the pin D,when the shell is moved endwise.

In the inner face of the shell C is a straight longitudinal channel Cand the pin D projects through the-cam-slot in the shell B into thischannel 0 v The covering-ends of the two shells each have in them a holeB and C respectively which are large enough to permit the writing-nib Ato project through. The hole C is opposite the writing-nib, but the hole13 is out of register with the hole C when the parts are in the coveringposition shown in Figure 1. v

A collar E is screwed into the end of the outer shell C to hold thisnormally upon the'pen.

It will be seen that with the composite cap arranged as described aboveendwise movement of the cap in the direction to uncover the nib willcause the inner shell B to. rotate so that the two holes B C- are inregister by the time the end of the cap reaches the point occupied bythe writing-nib. The two shells then continue to slide without relativerotation so that the nib can be made to project as shown in Figure 2. Areverse movement efl'ects the covering of the nib and the bringing ofthe holes B C again out of register.

The parts are easily assembled or separated for examination or repair asthe collar E, in conjunction with the pin D are .the onl parts whichhold the cap on the pen. y removing the collar E the shell C can beremoved and then by removing the pinD, which conveniently takes the formof a grub-screw, the shell B can be removed.

15 Obviously, the details of the invention can be varied withoutdeparting from the spirit of the invention, and the particularconstruction described is only set forth by way of example and not byway of limitation.

What I claim as my invention and desire to secure by Letters Patent is:

1. In a fountain pen, the combination with the. body portion of the pen,and a writing nib carried at one end thereof, of a cap for thenib.comprising two parts whereof one is rotatable relatively to theother about the longitudinal axis of the pen, which cap' is slidableendwise on'said body portion and has in one of said parts an orifice topermit the nib toproject through it when-the cap it at the limit of itsmovement in one direction, the other of said parts constituting aclosure member for said orifice, and means operative with the slidingmovement of the cap and arranged to rotate one of said parts in relationto the other to close and open the orifice when the cap is moved endwisein either direction on said body. portion, substantially as described.

2. In a fountain pen, the combination with 'thebody portion of the pen,and a writing-nib carried eccentrically atone end thereof, of a cap forthe nib comprising an outer shell and an inner shell rotatablerelatively to one another, which cap is slidable endwise at one end onthe, said body portion and both said shells have in their other end aneccentric orifice to permit the nib to pro ect therethrough when the capis at.

the cap is moved endwise in either direc tion on said body portion,substantially is described.

shell and slidable endwise on the body portion, which shells havein'their end remote from the bodyportion each an eccentric orifice toermit the nib to roject there through w en the cap is at t e limit ofits movement in one-direction, and means operatively connecting said capwith said body.

portion, which means are adapted to rotate close the orifices as theinner shell moves .the inner shell in relation to the outer to endwiseduring at least part of such endthereof, of a cap for the nib comprisingan outer shell non-rotatable on but slidable endwise on the nib end ofthe body portion, and an inner shell rotatable in the outer shell andslidable endwise on said body portion,

which shells have in their ends directed away from the body portion eachan eccentric orifice, and a pin'mounted on the said body portion, saidinner shell having a longitudinally disposed cam-slotinto which said pinextends, said slot being so shaped as to bring the orifice in the oneshell into register with the orifice in the other at the limit of themovement of the cap in the one direction and out of register at thelimit of the'movement of the cap in the other direction, substantiallyas described.

5..In a fountain pen, the combination with the body portion of the pen,and a writing-nib carried eccentrically at one end thereof, of a cap forthe nib comprising an outer shell non-rotatable on but slidable endwiseon the nib end of the body portion, and an inner shell rotatable in theouter shell and slidable endwise on said body portion, which shells havein their ends directed away from the body portion each an eccentricorifice, said inner shell having a longitudinally disposed cam-slot andsaid outer shell having .a straight longitudinal guideway, and a pinmounted on the said body portion and extending through said slot intoengagement with said guideway, said slot being so shaped as to bring theorifice in the one shell into register wlth the orifice in the other atthe limit of the movement of the cap in the direction towards the bodyportion and out of register at the limit of the movement of the cap inthe other direction, substantially as described.

6. In a fountain pen, the combination with the body portion of the pen,and a writing-nib carried eccentrically at one end thereof, of a cap forthe nib comprising. an outer shell non-rotatable on but slidable'endwiseon the nib end of the bodyportion, andan inner shell rotatable in theouter shell and slidable endwise on said body. portion, which shellshave in their ends directed away from the body sgortion each shell intoI with the orifice in the an eccentric orifice, said inner ell having aother at the u 't of the movement of the 10 longitudinally disposedcam-slot, and .said cap in the direction towardsthe body porouter shellhaving in its inner face a straight tion and out of register at thelimit of" the.

5 longitudinal-channel, and a. pin mounted on movement of the cap in theother direction,

' sai body portion and extending through substantially as described.

said s'lotinto said channel, said slot being In testimony whereofIaflixmy signature. so. shaped as'to bring the orifice in the one HIGHS EDWARDRUDDERHAI.

